ctucx.git: stagit

add stagit.c

diff --git a/stagit.c b/stagit.c
@@ -0,0 +1,852 @@
+#include <sys/stat.h>
+
+#include <err.h>
+#include <errno.h>
+#include <inttypes.h>
+#include <libgen.h>
+#include <limits.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+
+#include <git2.h>
+
+#include "compat.h"
+#include "config.h"
+
+struct commitinfo {
+	const git_oid *id;
+
+	char oid[GIT_OID_HEXSZ + 1];
+	char parentoid[GIT_OID_HEXSZ + 1];
+
+	const git_signature *author;
+	const char *summary;
+	const char *msg;
+
+	git_diff_stats *stats;
+	git_diff       *diff;
+	git_commit     *commit;
+	git_commit     *parent;
+	git_tree       *commit_tree;
+	git_tree       *parent_tree;
+
+	size_t addcount;
+	size_t delcount;
+	size_t filecount;
+};
+
+static git_repository *repo;
+
+static const char *relpath = "";
+static const char *repodir;
+
+static char name[255];
+static char description[255];
+static char cloneurl[1024];
+static int hasreadme, haslicense;
+
+void
+commitinfo_free(struct commitinfo *ci)
+{
+	if (!ci)
+		return;
+
+	git_diff_stats_free(ci->stats);
+	git_diff_free(ci->diff);
+	git_tree_free(ci->commit_tree);
+	git_tree_free(ci->parent_tree);
+	git_commit_free(ci->commit);
+}
+
+struct commitinfo *
+commitinfo_getbyoid(const git_oid *id)
+{
+	struct commitinfo *ci;
+	git_diff_options opts;
+	int error;
+
+	if (!(ci = calloc(1, sizeof(struct commitinfo))))
+		err(1, "calloc");
+
+	ci->id = id;
+	if (git_commit_lookup(&(ci->commit), repo, id))
+		goto err;
+
+	git_oid_tostr(ci->oid, sizeof(ci->oid), git_commit_id(ci->commit));
+	git_oid_tostr(ci->parentoid, sizeof(ci->parentoid), git_commit_parent_id(ci->commit, 0));
+
+	ci->author = git_commit_author(ci->commit);
+	ci->summary = git_commit_summary(ci->commit);
+	ci->msg = git_commit_message(ci->commit);
+
+	if ((error = git_commit_tree(&(ci->commit_tree), ci->commit)))
+		goto err;
+	if (!(error = git_commit_parent(&(ci->parent), ci->commit, 0))) {
+		if ((error = git_commit_tree(&(ci->parent_tree), ci->parent)))
+			goto err;
+	} else {
+		ci->parent = NULL;
+		ci->parent_tree = NULL;
+	}
+
+	git_diff_init_options(&opts, GIT_DIFF_OPTIONS_VERSION);
+	opts.flags |= GIT_DIFF_DISABLE_PATHSPEC_MATCH;
+	if ((error = git_diff_tree_to_tree(&(ci->diff), repo, ci->parent_tree, ci->commit_tree, &opts)))
+		goto err;
+	if (git_diff_get_stats(&(ci->stats), ci->diff))
+		goto err;
+
+	ci->addcount = git_diff_stats_insertions(ci->stats);
+	ci->delcount = git_diff_stats_deletions(ci->stats);
+	ci->filecount = git_diff_stats_files_changed(ci->stats);
+
+	return ci;
+
+err:
+	commitinfo_free(ci);
+	free(ci);
+
+	return NULL;
+}
+
+FILE *
+efopen(const char *name, const char *flags)
+{
+	FILE *fp;
+
+	if (!(fp = fopen(name, flags)))
+		err(1, "fopen");
+
+	return fp;
+}
+
+/* Escape characters below as HTML 2.0 / XML 1.0. */
+void
+xmlencode(FILE *fp, const char *s, size_t len)
+{
+	size_t i;
+
+	for (i = 0; *s && i < len; s++, i++) {
+		switch(*s) {
+		case '<':  fputs("&lt;",   fp); break;
+		case '>':  fputs("&gt;",   fp); break;
+		case '\'': fputs("&apos;", fp); break;
+		case '&':  fputs("&amp;",  fp); break;
+		case '"':  fputs("&quot;", fp); break;
+		default:   fputc(*s, fp);
+		}
+	}
+}
+
+/* Some implementations of dirname(3) return a pointer to a static
+ * internal buffer (OpenBSD). Others modify the contents of `path` (POSIX).
+ * This is a wrapper function that is compatible with both versions.
+ * The program will error out if dirname(3) failed, this can only happen
+ * with the OpenBSD version. */
+char *
+xdirname(const char *path)
+{
+	char *p, *b;
+
+	if (!(p = strdup(path)))
+		err(1, "strdup");
+	if (!(b = dirname(p)))
+		err(1, "basename");
+	if (!(b = strdup(b)))
+		err(1, "strdup");
+	free(p);
+
+	return b;
+}
+
+/* Some implementations of basename(3) return a pointer to a static
+ * internal buffer (OpenBSD). Others modify the contents of `path` (POSIX).
+ * This is a wrapper function that is compatible with both versions.
+ * The program will error out if basename(3) failed, this can only happen
+ * with the OpenBSD version. */
+char *
+xbasename(const char *path)
+{
+	char *p, *b;
+
+	if (!(p = strdup(path)))
+		err(1, "strdup");
+	if (!(b = basename(p)))
+		err(1, "basename");
+	if (!(b = strdup(b)))
+		err(1, "strdup");
+	free(p);
+
+	return b;
+}
+
+int
+mkdirp(const char *path)
+{
+	char tmp[PATH_MAX], *p;
+
+	strlcpy(tmp, path, sizeof(tmp));
+	for (p = tmp + (tmp[0] == '/'); *p; p++) {
+		if (*p != '/')
+			continue;
+		*p = '\0';
+		if (mkdir(tmp, S_IRWXU | S_IRWXG | S_IRWXO) < 0 && errno != EEXIST)
+			return -1;
+		*p = '/';
+	}
+	if (mkdir(tmp, S_IRWXU | S_IRWXG | S_IRWXO) < 0 && errno != EEXIST)
+		return -1;
+	return 0;
+}
+
+void
+printtimeformat(FILE *fp, const git_time *intime, const char *fmt)
+{
+	struct tm *intm;
+	time_t t;
+	char out[32];
+
+	t = (time_t) intime->time + (intime->offset * 60);
+	intm = gmtime(&t);
+	strftime(out, sizeof(out), fmt, intm);
+	fputs(out, fp);
+}
+
+void
+printtimez(FILE *fp, const git_time *intime)
+{
+	printtimeformat(fp, intime, "%Y-%m-%dT%H:%M:%SZ");
+}
+
+void
+printtime(FILE *fp, const git_time *intime)
+{
+	printtimeformat(fp, intime, "%a %b %e %T %Y");
+}
+
+void
+printtimeshort(FILE *fp, const git_time *intime)
+{
+	printtimeformat(fp, intime, "%Y-%m-%d %H:%M");
+}
+
+int
+writeheader(FILE *fp)
+{
+	fputs("<!DOCTYPE HTML>"
+		"<html dir=\"ltr\" lang=\"en\">\n<head>\n"
+		"<meta http-equiv=\"Content-Type\" content=\"text/html; charset=UTF-8\" />\n"
+		"<meta http-equiv=\"Content-Language\" content=\"en\" />\n<title>", fp);
+	xmlencode(fp, name, strlen(name));
+	if (description[0])
+		fputs(" - ", fp);
+	xmlencode(fp, description, strlen(description));
+	fprintf(fp, "</title>\n<link rel=\"icon\" type=\"image/png\" href=\"%sfavicon.png\" />\n", relpath);
+	fprintf(fp, "<link rel=\"alternate\" type=\"application/atom+xml\" title=\"%s Atom Feed\" href=\"%satom.xml\" />\n",
+		name, relpath);
+	fprintf(fp, "<link rel=\"stylesheet\" type=\"text/css\" href=\"%sstyle.css\" />\n", relpath);
+	fputs("</head>\n<body>\n<table><tr><td>", fp);
+	fprintf(fp, "<a href=\"../%s\"><img src=\"%slogo.png\" alt=\"\" width=\"32\" height=\"32\" /></a>",
+	        relpath, relpath);
+	fputs("</td><td><h1>", fp);
+	xmlencode(fp, name, strlen(name));
+	fputs("</h1><span class=\"desc\">", fp);
+	xmlencode(fp, description, strlen(description));
+	fputs("</span></td></tr>", fp);
+	if (cloneurl[0]) {
+		fputs("<tr class=\"url\"><td></td><td>git clone <a href=\"", fp);
+		xmlencode(fp, cloneurl, strlen(cloneurl));
+		fputs("\">", fp);
+		xmlencode(fp, cloneurl, strlen(cloneurl));
+		fputs("</a></td></tr>", fp);
+	}
+	fputs("<tr><td></td><td>\n", fp);
+	fprintf(fp, "<a href=\"%slog.html\">Log</a> | ", relpath);
+	fprintf(fp, "<a href=\"%sfiles.html\">Files</a>", relpath);
+	if (hasreadme)
+		fprintf(fp, " | <a href=\"%sfile/README.html\">README</a>", relpath);
+	if (haslicense)
+		fprintf(fp, " | <a href=\"%sfile/LICENSE.html\">LICENSE</a>", relpath);
+	fputs("</td></tr></table>\n<hr/><div id=\"content\">\n", fp);
+
+	return 0;
+}
+
+int
+writefooter(FILE *fp)
+{
+	return !fputs("</div></body>\n</html>", fp);
+}
+
+void
+writeblobhtml(FILE *fp, const git_blob *blob)
+{
+	off_t i = 0;
+	size_t n = 1;
+	char *nfmt = "<a href=\"#l%d\" id=\"l%d\">%d</a>\n";
+	const char *s = git_blob_rawcontent(blob);
+	git_off_t len = git_blob_rawsize(blob);
+
+	fputs("<table id=\"blob\"><tr><td class=\"num\"><pre>\n", fp);
+
+	if (len) {
+		fprintf(fp, nfmt, n, n, n);
+		while (i < len - 1) {
+			if (s[i] == '\n') {
+				n++;
+				fprintf(fp, nfmt, n, n, n);
+			}
+			i++;
+		}
+	}
+
+	fputs("</pre></td><td><pre>\n", fp);
+	xmlencode(fp, s, (size_t)len);
+	fputs("</pre></td></tr></table>\n", fp);
+}
+
+void
+printcommit(FILE *fp, struct commitinfo *ci)
+{
+	fprintf(fp, "<b>commit</b> <a href=\"%scommit/%s.html\">%s</a>\n",
+		relpath, ci->oid, ci->oid);
+
+	if (ci->parentoid[0])
+		fprintf(fp, "<b>parent</b> <a href=\"%scommit/%s.html\">%s</a>\n",
+			relpath, ci->parentoid, ci->parentoid);
+
+#if 0
+	if ((count = (int)git_commit_parentcount(commit)) > 1) {
+		fprintf(fp, "<b>Merge:</b>");
+		for (i = 0; i < count; i++) {
+			git_oid_tostr(buf, 8, git_commit_parent_id(commit, i));
+			fprintf(fp, " <a href=\"%scommit/%s.html\">%s</a>",
+				relpath, buf, buf);
+		}
+		fputc('\n', fp);
+	}
+#endif
+	if (ci->author) {
+		fprintf(fp, "<b>Author:</b> ");
+		xmlencode(fp, ci->author->name, strlen(ci->author->name));
+		fprintf(fp, " &lt;<a href=\"mailto:");
+		xmlencode(fp, ci->author->email, strlen(ci->author->email));
+		fputs("\">", fp);
+		xmlencode(fp, ci->author->email, strlen(ci->author->email));
+		fputs("</a>&gt;\n<b>Date:</b>   ", fp);
+		printtime(fp, &(ci->author->when));
+		fputc('\n', fp);
+	}
+	fputc('\n', fp);
+
+	if (ci->msg)
+		xmlencode(fp, ci->msg, strlen(ci->msg));
+
+	fputc('\n', fp);
+}
+
+void
+printshowfile(struct commitinfo *ci)
+{
+	const git_diff_delta *delta;
+	const git_diff_hunk *hunk;
+	const git_diff_line *line;
+	git_patch *patch;
+	git_buf statsbuf;
+	size_t ndeltas, nhunks, nhunklines;
+	FILE *fp;
+	size_t i, j, k;
+	char path[PATH_MAX];
+
+	snprintf(path, sizeof(path), "commit/%s.html", ci->oid);
+	/* check if file exists if so skip it */
+	if (!access(path, F_OK))
+		return;
+
+	fp = efopen(path, "w");
+	writeheader(fp);
+	fputs("<pre>\n", fp);
+	printcommit(fp, ci);
+
+	memset(&statsbuf, 0, sizeof(statsbuf));
+
+	/* diff stat */
+	if (ci->stats) {
+		if (!git_diff_stats_to_buf(&statsbuf, ci->stats,
+		    GIT_DIFF_STATS_FULL | GIT_DIFF_STATS_SHORT, 80)) {
+			if (statsbuf.ptr && statsbuf.ptr[0]) {
+				fprintf(fp, "<b>Diffstat:</b>\n");
+				fputs(statsbuf.ptr, fp);
+			}
+		}
+	}
+
+	fputs("<hr/>", fp);
+
+	ndeltas = git_diff_num_deltas(ci->diff);
+	for (i = 0; i < ndeltas; i++) {
+		if (git_patch_from_diff(&patch, ci->diff, i)) {
+			git_patch_free(patch);
+			break;
+		}
+
+		delta = git_patch_get_delta(patch);
+		fprintf(fp, "<b>diff --git a/<a href=\"%sfile/%s.html\">%s</a> b/<a href=\"%sfile/%s.html\">%s</a></b>\n",
+			relpath, delta->old_file.path, delta->old_file.path,
+			relpath, delta->new_file.path, delta->new_file.path);
+
+		/* check binary data */
+		if (delta->flags & GIT_DIFF_FLAG_BINARY) {
+			fputs("Binary files differ\n", fp);
+			git_patch_free(patch);
+			continue;
+		}
+
+		nhunks = git_patch_num_hunks(patch);
+		for (j = 0; j < nhunks; j++) {
+			if (git_patch_get_hunk(&hunk, &nhunklines, patch, j))
+				break;
+
+			fprintf(fp, "<span class=\"h\">%s</span>\n", hunk->header);
+
+			for (k = 0; ; k++) {
+				if (git_patch_get_line_in_hunk(&line, patch, j, k))
+					break;
+				if (line->old_lineno == -1)
+					fprintf(fp, "<a href=\"#h%zu-%zu\" id=\"h%zu-%zu\" class=\"i\">+",
+						j, k, j, k);
+				else if (line->new_lineno == -1)
+					fprintf(fp, "<a href=\"#h%zu-%zu\" id=\"h%zu-%zu\" class=\"d\">-",
+						j, k, j, k);
+				else
+					fputc(' ', fp);
+				xmlencode(fp, line->content, line->content_len);
+				if (line->old_lineno == -1 || line->new_lineno == -1)
+					fputs("</a>", fp);
+			}
+		}
+		git_patch_free(patch);
+	}
+	git_buf_free(&statsbuf);
+
+	fputs( "</pre>\n", fp);
+	writefooter(fp);
+	fclose(fp);
+	return;
+}
+
+void
+writelog(FILE *fp)
+{
+	struct commitinfo *ci;
+	git_revwalk *w = NULL;
+	git_oid id;
+	size_t len;
+
+	mkdir("commit", 0755);
+
+	git_revwalk_new(&w, repo);
+	git_revwalk_push_head(w);
+	git_revwalk_sorting(w, GIT_SORT_TIME);
+	git_revwalk_simplify_first_parent(w);
+
+	fputs("<table id=\"log\"><thead>\n<tr><td>Age</td><td>Commit message</td>"
+		  "<td>Author</td><td>Files</td><td class=\"num\">+</td>"
+		  "<td class=\"num\">-</td></tr>\n</thead><tbody>\n", fp);
+	while (!git_revwalk_next(&id, w)) {
+		relpath = "";
+
+		if (!(ci = commitinfo_getbyoid(&id)))
+			break;
+
+		fputs("<tr><td>", fp);
+		if (ci->author)
+			printtimeshort(fp, &(ci->author->when));
+		fputs("</td><td>", fp);
+		if (ci->summary) {
+			fprintf(fp, "<a href=\"%scommit/%s.html\">", relpath, ci->oid);
+			if ((len = strlen(ci->summary)) > summarylen) {
+				xmlencode(fp, ci->summary, summarylen - 1);
+				fputs("…", fp);
+			} else {
+				xmlencode(fp, ci->summary, len);
+			}
+			fputs("</a>", fp);
+		}
+		fputs("</td><td>", fp);
+		if (ci->author)
+			xmlencode(fp, ci->author->name, strlen(ci->author->name));
+		fputs("</td><td class=\"num\">", fp);
+		fprintf(fp, "%zu", ci->filecount);
+		fputs("</td><td class=\"num\">", fp);
+		fprintf(fp, "+%zu", ci->addcount);
+		fputs("</td><td class=\"num\">", fp);
+		fprintf(fp, "-%zu", ci->delcount);
+		fputs("</td></tr>\n", fp);
+
+		relpath = "../";
+		printshowfile(ci);
+
+		commitinfo_free(ci);
+	}
+	fprintf(fp, "</tbody></table>");
+
+	git_revwalk_free(w);
+	relpath = "";
+}
+
+void
+printcommitatom(FILE *fp, struct commitinfo *ci)
+{
+	fputs("<entry>\n", fp);
+
+	fprintf(fp, "<id>%s</id>\n", ci->oid);
+	if (ci->author) {
+		fputs("<updated>", fp);
+		printtimez(fp, &(ci->author->when));
+		fputs("</updated>\n", fp);
+	}
+	if (ci->summary) {
+		fputs("<title type=\"text\">", fp);
+		xmlencode(fp, ci->summary, strlen(ci->summary));
+		fputs("</title>\n", fp);
+	}
+
+	fputs("<content type=\"text\">", fp);
+	fprintf(fp, "commit %s\n", ci->oid);
+	if (ci->parentoid[0])
+		fprintf(fp, "parent %s\n", ci->parentoid);
+
+#if 0
+	if ((count = (int)git_commit_parentcount(commit)) > 1) {
+		fprintf(fp, "Merge:");
+		for (i = 0; i < count; i++) {
+			git_oid_tostr(buf, 8, git_commit_parent_id(commit, i));
+			fprintf(fp, " %s", buf);
+		}
+		fputc('\n', fp);
+	}
+#endif
+
+	if (ci->author) {
+		fprintf(fp, "Author: ");
+		xmlencode(fp, ci->author->name, strlen(ci->author->name));
+		fprintf(fp, " &lt;");
+		xmlencode(fp, ci->author->email, strlen(ci->author->email));
+		fprintf(fp, "&gt;\nDate:   ");
+		printtime(fp, &(ci->author->when));
+	}
+	fputc('\n', fp);
+
+	if (ci->msg)
+		xmlencode(fp, ci->msg, strlen(ci->msg));
+	fputs("\n</content>\n", fp);
+	if (ci->author) {
+		fputs("<author><name>", fp);
+		xmlencode(fp, ci->author->name, strlen(ci->author->name));
+		fputs("</name>\n<email>", fp);
+		xmlencode(fp, ci->author->email, strlen(ci->author->email));
+		fputs("</email>\n</author>\n", fp);
+	}
+	fputs("</entry>\n", fp);
+}
+
+int
+writeatom(FILE *fp)
+{
+	struct commitinfo *ci;
+	git_revwalk *w = NULL;
+	git_oid id;
+	size_t i, m = 100; /* max */
+
+	fputs("<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n"
+	      "<feed xmlns=\"http://www.w3.org/2005/Atom\">\n<title>", fp);
+	xmlencode(fp, name, strlen(name));
+	fputs(", branch master</title>\n<subtitle>", fp);
+
+	xmlencode(fp, description, strlen(description));
+	fputs("</subtitle>\n", fp);
+
+	git_revwalk_new(&w, repo);
+	git_revwalk_push_head(w);
+	git_revwalk_sorting(w, GIT_SORT_TIME);
+	git_revwalk_simplify_first_parent(w);
+
+	for (i = 0; i < m && !git_revwalk_next(&id, w); i++) {
+		if (!(ci = commitinfo_getbyoid(&id)))
+			break;
+		printcommitatom(fp, ci);
+		commitinfo_free(ci);
+	}
+	git_revwalk_free(w);
+
+	fputs("</feed>", fp);
+
+	return 0;
+}
+
+int
+writeblob(git_object *obj, const char *filename, git_off_t filesize)
+{
+	char fpath[PATH_MAX];
+	char tmp[PATH_MAX] = "";
+	char *d, *p;
+	FILE *fp;
+
+	snprintf(fpath, sizeof(fpath), "file/%s.html", filename);
+	d = xdirname(fpath);
+	if (mkdirp(d)) {
+		free(d);
+		return 1;
+	}
+	free(d);
+
+	p = fpath;
+	while (*p) {
+		if (*p == '/')
+			strlcat(tmp, "../", sizeof(tmp));
+		p++;
+	}
+	relpath = tmp;
+
+	fp = efopen(fpath, "w");
+	writeheader(fp);
+	fputs("<p> ", fp);
+	xmlencode(fp, filename, strlen(filename));
+	fprintf(fp, " (%" PRIu32 "b)", filesize);
+	fputs("</p><hr/>", fp);
+
+	if (git_blob_is_binary((git_blob *)obj)) {
+		fprintf(fp, "<p>Binary file</p>\n");
+	} else {
+		writeblobhtml(fp, (git_blob *)obj);
+		if (ferror(fp))
+			err(1, "fwrite");
+	}
+	writefooter(fp);
+	fclose(fp);
+
+	relpath = "";
+
+	return 0;
+}
+
+const char *
+filemode(git_filemode_t m)
+{
+	static char mode[11];
+
+	memset(mode, '-', sizeof(mode) - 1);
+	mode[10] = '\0';
+
+	if (S_ISREG(m))
+		mode[0] = '-';
+	else if (S_ISBLK(m))
+		mode[0] = 'b';
+	else if (S_ISCHR(m))
+		mode[0] = 'c';
+	else if (S_ISDIR(m))
+		mode[0] = 'd';
+	else if (S_ISFIFO(m))
+		mode[0] = 'p';
+	else if (S_ISLNK(m))
+		mode[0] = 'l';
+	else if (S_ISSOCK(m))
+		mode[0] = 's';
+	else
+		mode[0] = '?';
+
+	if (m & S_IRUSR) mode[1] = 'r';
+	if (m & S_IWUSR) mode[2] = 'w';
+	if (m & S_IXUSR) mode[3] = 'x';
+	if (m & S_IRGRP) mode[4] = 'r';
+	if (m & S_IWGRP) mode[5] = 'w';
+	if (m & S_IXGRP) mode[6] = 'x';
+	if (m & S_IROTH) mode[7] = 'r';
+	if (m & S_IWOTH) mode[8] = 'w';
+	if (m & S_IXOTH) mode[9] = 'x';
+
+	if (m & S_ISUID) mode[3] = (mode[3] == 'x') ? 's' : 'S';
+	if (m & S_ISGID) mode[6] = (mode[6] == 'x') ? 's' : 'S';
+	if (m & S_ISVTX) mode[9] = (mode[9] == 'x') ? 't' : 'T';
+
+	return mode;
+}
+
+int
+writefilestree(FILE *fp, git_tree *tree, const char *path)
+{
+	const git_tree_entry *entry = NULL;
+	const char *filename;
+	char filepath[PATH_MAX];
+	git_object *obj = NULL;
+	git_off_t filesize;
+	size_t count, i;
+	int ret;
+
+	count = git_tree_entrycount(tree);
+	for (i = 0; i < count; i++) {
+		if (!(entry = git_tree_entry_byindex(tree, i)))
+			return -1;
+
+		filename = git_tree_entry_name(entry);
+		if (git_tree_entry_to_object(&obj, repo, entry))
+			return -1;
+		switch (git_object_type(obj)) {
+		case GIT_OBJ_BLOB:
+			break;
+		case GIT_OBJ_TREE:
+			ret = writefilestree(fp, (git_tree *)obj, filename);
+			git_object_free(obj);
+			if (ret)
+				return ret;
+			continue;
+		default:
+			git_object_free(obj);
+			continue;
+		}
+		if (path[0]) {
+			snprintf(filepath, sizeof(filepath), "%s/%s", path, filename);
+			filename = filepath;
+		}
+
+		filesize = git_blob_rawsize((git_blob *)obj);
+
+		fputs("<tr><td>", fp);
+		fprintf(fp, "%s", filemode(git_tree_entry_filemode(entry)));
+		fprintf(fp, "</td><td><a href=\"%sfile/", relpath);
+		xmlencode(fp, filename, strlen(filename));
+		fputs(".html\">", fp);
+		xmlencode(fp, filename, strlen(filename));
+		fputs("</a></td><td class=\"num\">", fp);
+		fprintf(fp, "%" PRIu32, filesize);
+		fputs("</td></tr>\n", fp);
+
+		writeblob(obj, filename, filesize);
+	}
+
+	return 0;
+}
+
+int
+writefiles(FILE *fp)
+{
+	const git_oid *id;
+	git_tree *tree = NULL;
+	git_object *obj = NULL;
+	git_commit *commit = NULL;
+
+	fputs("<table id=\"files\"><thead>\n<tr>"
+	      "<td>Mode</td><td>Name</td><td class=\"num\">Size</td>"
+	      "</tr>\n</thead><tbody>\n", fp);
+
+	if (git_revparse_single(&obj, repo, "HEAD"))
+		return -1;
+	id = git_object_id(obj);
+	if (git_commit_lookup(&commit, repo, id))
+		return -1;
+	if (git_commit_tree(&tree, commit)) {
+		git_commit_free(commit);
+		return -1;
+	}
+	git_commit_free(commit);
+
+	writefilestree(fp, tree, "");
+
+	git_commit_free(commit);
+	git_tree_free(tree);
+
+	fputs("</tbody></table>", fp);
+
+	return 0;
+}
+
+int
+main(int argc, char *argv[])
+{
+	git_object *obj = NULL;
+	const git_error *e = NULL;
+	FILE *fp, *fpread;
+	char path[PATH_MAX], *p;
+	int status;
+
+	if (argc != 2) {
+		fprintf(stderr, "%s <repodir>\n", argv[0]);
+		return 1;
+	}
+	repodir = argv[1];
+
+	git_libgit2_init();
+
+	if ((status = git_repository_open_ext(&repo, repodir,
+		GIT_REPOSITORY_OPEN_NO_SEARCH, NULL)) < 0) {
+		e = giterr_last();
+		fprintf(stderr, "error %d/%d: %s\n", status, e->klass, e->message);
+		return status;
+	}
+
+	/* use directory name as name */
+	p = xbasename(repodir);
+	snprintf(name, sizeof(name), "%s", p);
+	free(p);
+
+	/* read description or .git/description */
+	snprintf(path, sizeof(path), "%s%s%s",
+		repodir, repodir[strlen(repodir)] == '/' ? "" : "/", "description");
+	if (!(fpread = fopen(path, "r"))) {
+		snprintf(path, sizeof(path), "%s%s%s",
+			repodir, repodir[strlen(repodir)] == '/' ? "" : "/", ".git/description");
+		fpread = fopen(path, "r");
+	}
+	if (fpread) {
+		if (!fgets(description, sizeof(description), fpread))
+			description[0] = '\0';
+		fclose(fpread);
+	}
+
+	/* read url or .git/url */
+	snprintf(path, sizeof(path), "%s%s%s",
+		repodir, repodir[strlen(repodir)] == '/' ? "" : "/", "url");
+	if (!(fpread = fopen(path, "r"))) {
+		snprintf(path, sizeof(path), "%s%s%s",
+			repodir, repodir[strlen(repodir)] == '/' ? "" : "/", ".git/url");
+		fpread = fopen(path, "r");
+	}
+	if (fpread) {
+		if (!fgets(cloneurl, sizeof(cloneurl), fpread))
+			cloneurl[0] = '\0';
+		fclose(fpread);
+	}
+
+	/* check LICENSE */
+	haslicense = !git_revparse_single(&obj, repo, "HEAD:LICENSE");
+	git_object_free(obj);
+	/* check README */
+	hasreadme = !git_revparse_single(&obj, repo, "HEAD:README");
+	git_object_free(obj);
+
+	fp = efopen("log.html", "w");
+	writeheader(fp);
+	writelog(fp);
+	writefooter(fp);
+	fclose(fp);
+
+	fp = efopen("files.html", "w");
+	writeheader(fp);
+	writefiles(fp);
+	writefooter(fp);
+	fclose(fp);
+
+	/* Atom feed */
+	fp = efopen("atom.xml", "w");
+	writeatom(fp);
+	fclose(fp);
+
+	/* cleanup */
+	git_repository_free(repo);
+	git_libgit2_shutdown();
+
+	return 0;
+}